so if it's a place where buses gather it's helpful to have the word "bus" in there for identity purposes.

IMNSHO you shot yourself in the foot there. A Rail Waystation is a place where trains congregate. So no different from bus or coach. You could say that a Rail Station is a place where rails meet, but only if there are points. If you get my point!

Then again, is it not, technically a rails station, unless it has a monorail? And wot abart a halt? Language, especially (English) English, conveys concepts - if you want precision try computer languages - the real home of the pedant.